GB398498A - Improvements in and relating to electric power converting apparatus - Google Patents
Improvements in and relating to electric power converting apparatusInfo
- Publication number
- GB398498A GB398498A GB793/32A GB79332A GB398498A GB 398498 A GB398498 A GB 398498A GB 793/32 A GB793/32 A GB 793/32A GB 79332 A GB79332 A GB 79332A GB 398498 A GB398498 A GB 398498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conducting
- grid
- valve
- circuit
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/51—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Amplifiers (AREA)
- Particle Accelerators (AREA)
Abstract
398,498. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Bivens, M. E. ; 17, Glen Avenue, Scotia, New York, U.S.A.) Jan. 11, 1932, No. 793. Convention date, Jan. 9, 1931. [Class 38 (ii).] In a series-type inverter having discontinuous control valves 13, 18, the grid circuits of which each include one of the secondary windings of a grid transformer 21, unilaterally conducting devices 26 are connected in parallel with these windings and means are provided for applying a negative bias to the control grid of the non-conducting valve while the other is conducting current so that abnormal conditions in the circuit supplying the transformer 21 do not cause both valves to conduct simultaneously and short circuit the D.C. supply 10. The valves 13, 18 are of the type which commence to conduct current when the grid is slightly negative. The grid circuit of each valve includes also a unilaterally conducting device 23 and the secondary 24 of a transformer 25 the primary of which is connected in the A.C. output circuit. Positive half-waves of potential in the winding 20 are short circuited by means of a unilaterally conducting device 26, a resistance 27 restricting the current. During the period when the valve 13 is conducting, the potential induced in the winding 24 is in such a direction that the unilaterally conducting device 23 is non-conducting. Hence the total p.d. between the cathode and grid is approximately zero. At the same time the potential in the winding 34 is in such a direction that the device 33 is conducting and current flows through a resistance 36, thus introducing into the grid circuit of valve 18 a large negative biassing potential, which is effective to maintain this valve non-conducting while the valve 13 is conducting current. If the valves are of the type that require a small positive bias on the grid to initiate conduction, a small resistance is inserted in series with the device 26 in each grid circuit. Specification 347,474 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US507748A US1990366A (en) | 1931-01-09 | 1931-01-09 | Electric translation circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB398498A true GB398498A (en) | 1933-09-11 |
Family
ID=24019953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB793/32A Expired GB398498A (en) | 1931-01-09 | 1932-01-11 | Improvements in and relating to electric power converting apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1990366A (en) |
| BE (1) | BE385535A (en) |
| DE (1) | DE602770C (en) |
| FR (1) | FR41397E (en) |
| GB (1) | GB398498A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE976977C (en) * | 1939-04-27 | 1964-10-15 | Aeg | Arrangement for the ignition of an alternating current fed grid-controlled vapor or gas-filled discharge path |
| BE470410A (en) * | 1940-07-12 | |||
| US2611113A (en) * | 1951-02-02 | 1952-09-16 | Photoswitch Marine Division In | Electrolyte indicating and control apparatus |
| DE973843C (en) * | 1951-04-04 | 1960-06-23 | Siemens Ag | Inverter, especially for generating control voltages for spot weld welding machines |
-
0
- BE BE385535D patent/BE385535A/xx unknown
-
1931
- 1931-01-09 US US507748A patent/US1990366A/en not_active Expired - Lifetime
- 1931-12-16 DE DEA64446D patent/DE602770C/en not_active Expired
-
1932
- 1932-01-06 FR FR41397D patent/FR41397E/en not_active Expired
- 1932-01-11 GB GB793/32A patent/GB398498A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR41397E (en) | 1933-01-07 |
| DE602770C (en) | 1934-09-15 |
| BE385535A (en) | |
| US1990366A (en) | 1935-02-05 |
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